Hose clamp



April 30, 1935. H. A. BoRREsL-:N 1,999,683

HOSE CLAMP Filed Dec. l, 1955 2 Sheets-Sheet l April 30, 1935 v H. A. BoRREsEN 999,683

HOSE- CLAMP Filed Dec. 1, 1933 2 sheets-sheet 2 Patented A-pr., 30, 1935 PATENT OFFICE v HOSE CLAMP Helge A. Borresen, Chicago, Ill. Application December 1, 1933, Serial No. 700,462

` s claims. y (ci. 24-19) My invention relates to hose clamps and has as its principal object the provision of a hose clamp which will clamp the hose uniformly throughout the circumference thereof.

- It is also a purpose of my invention to provide' a clamp of this character which can be adjusted as to size withoutdestroying its ability to clamp the hose tightly at all points.

My invention contemplates also the provision of a clamp constructed of sheet metal'with the exception of the adjusting screw in which the metal is so formed as to properly reenforce those portions of the clamp where extra strength is needed by taking the metal from other points where the strength is not needed.

I will describe the preferred form of my invention by reference to the accompanying drawings. It is to be understood however that the drawings and descriptions are illustrative only and are not to be taken as limiting the invention except insofar as it is limited by the claims.

In the drawings- Fig. 1 is a perspective view of the clamp;

Fig. 2 is a sectional view through a hose with my clamp applied thereto;

Fig. 3 is an enlarged perspective of a portion of the clamp; y

Fig. 4 is a view similar to Fig. 3 of the other section of the clamp that cooperates with that section shown in Fig. 3;

Fig. 5 is a section on the line 5 5 of Fig. 1;

Fig. 6 is a sectional view showing a slightly dilerent type of clamp;

Figs. 7 and 8 are perspectives of the two interlocking portions of the clamp shown in Fig. 6;

Fig. 9 is a section on the line 9-9 of Fig. '7;

Fig. l illustrates a modified form of clamp;

Fig. 11 is a side view of the clamp shown in Fig. l0;

' Fig. 12 is a section on the line IZ-IZ of Fig. 10;

Fig. 13 is a plan view showing how two clamps are made from asingle strip of metal;

Fig. 14 is a perspective of ,the screw-threaded member used. l

Referring now in detail to the drawings, the clamp is made up of two pieces ID and I I of sheet metal and adjusting bolt or screw I2. It is evident from the drawings that the two sections overlap, that is, the part-IB passes through the opening I3 of the part I I and the screw I2 spreads the ends I4 and I5 of the parts IU and II respectively so as to tighten the clamp on the hose.

'I'he end I5 of the member II is adapted to support the screw I2 and is turned up as indicated in Fig. 3, also the reenforcing portion I6 which is taken out of the strip to leave opening I3 aids in Vbracing the portion of the clamp subject to the greatest strain, namely the upturned portion I5. Portions I and I6 are, of course, screw threaded to receive the screw I2.

AThe end I4 of the piece I0 is drawn up to form a pocket for receiving the end of the screw I2. As shown most clearly by Figs. 2 and 4, this portion I4 is formed by drawing up the sides as indicated at Il and cupping over the end I8 of the metal. This lstructure is sufliciently strong to prevent straightening out ofthe end I4 under the pressure from the screw I 2.

As shown in Fig. 2, the tendency of the screw in spreading the ends I4 and I5 away from each other is to press them in toward the hose and thus clamp the hose just as tightly where I0 and II cross each other as at any other point.

The portions` I0 and II are adjustably hooked together at their other ends by means of the hook I8 and the cross-bars such as 20 and 2l.

vCross-bars -2l! and 2l are elevated or pressed out from the member II a distance sufficient to allow the thickness of the member I0 between them and the hose. In this way no loss of pressure on the hose where the` two pieces hook together is allowed.

Referring now to Figs. 6 to 9 inclusive, the portions III' and II' are quite similar to the portions I0 and II in Figs. loto 5. The screw I 2' operates to tighten the clamp the same as in the first form with the exception that the tube of the screw I2' passes through the portion I4 slightly as shown in Fig. 6.

'Ihe manner of connecting the portions IIJ' and I I' together for adjusting the length of the clamp is, however,-som ewhat different. The end of the member i0' has struck up therefrom the cone shaped portions such as 22 and 23. Then on the portion I I', the bridge 24 which is raised to pery mit the passage of I0' therebeneath has a downturned hook or tongue 25 to engage against the faces of the portions 22 and 23.

In the form of the invention shown in Figs. 10 14, inclusive, a cross-over clamp is also obtained, but this is a one-strap clamp having a wide range of adjustment.

In this form of the invention, the strap 26 has an enlarged or wide end 2l substantially double the width of the remaining portion of the strap. 'I'his wide end is cupped up at 28 in a manner similar to the cupping of the end I4 of the formv shown in Figs. 19. The end 21 is also apertured y at 29 to permit the other end of the strap to pass through it thus assuring a fullgrip all around the hose. The strap is provided with a series of apertures 32 extending from the small end toward the enlarged end for giving a wide range of adjustment.

'I'he screw 30 is passed through one of the apertures 32 and through the threaded nut 3|. The point of the screw which is rounded is seated in the cupped end 28, and,by turning this screw, the two ends of the clamp may be spread apart to draw it down on the hose. The rounded edges it is bent over this nut thus utilizing all the available tensile strength of the strap.

In Fig. 13, I have shown two clamps side by side to illustrate how a single strip of material can be cut tc make two clamps with practically no loss of material. This enables me to produceI the clamps with practically no waste thereby reducing the ultimate cost of the clamp. The lateral oisetting of the wide end of the strap does not cause any diiiculty. In fact, it causes one side edge of the clamp to tend to hug the hose closely and thus is an advantage. The method of cutting two clamps from a single strip not only eliminates waste, but it makes it possible to produce two clamps with no more operations of the press and no more labor than is required to produce one clamp thus saving machinery, time, and labor. The nut 3l being elongated bears on the wide part of the clamp which strengthens the clamp further.

It will be noted. that the nut 3l rests directly on the line of cross-over between the two ends of the clamp. The nut assumes this position naturally in tightening the clamp and by pressing down on the three contact points of the clamp with the hose (see Fig. 10), as it does when the clamp is tightened, the nut further insures against leakage at the line where the two ends of the clamp cross each other which is the critical point of leakage. The aperture 29 is elongated suiciently to 'allow a substantial adjustment by means of the screw.

From the above description, it is believed that the construction and advantages of this device will be clearly apparent to those skilled in this art.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A hose clamp of sheet metal having one end portion provided with an opening through which the other end portion passes, the free end beyond said opening being turned up and screw threaded to receive a tightening screw, the other free end being cupped to receive the end of the screw, said turned up free end being reenforced by the material taken from said opening.

' 2. A hose clamp made up of two metal strips and a tightening screw, one of said strips being wider than the other and having one end turned up, said strip also having a portion of the material adjacent the end struck up and doubled over upon the turned up end to reenforce it, said other strip having one end passing through the opening from which the reenforcing material was struck up and cupped to receive the end of the screw, the turned up end and its reenforcement being screw threaded to receive the screw the other ends of said strips being hooked together.

3. A hose clamp made up of two metal strips and a tightening screw, one of said strips being wider than the other and having one end turned up, said strip also having a portion of the material of the nut 3| prevents cutting of the strap where apertured to provide a transverse securing portion adjacent its other end, which portion is raised intermediate 'the side edges of the strip high enough and wide enough for the cooperating end of the narrow strip to fit therein, said cooperating end having a hook for engaging said securing portion.

4. A hose clamp having a pair of sheet metal strips hooked together at one end and crossing each other at their other ends, a spreader screw connected to the crossed ends for spreading them, the hose gripping surfaces of said strips being the same in curvature where they hook together as at all other points around the hose to provide a uniform grip of the hose, one strip being'wider than the other and apertured at its end remote from the screw to provide a plurality of transverse securing portions which are raised above the hose gripping side edges for the height and Width of the narrower strip, said narrower strip having an out-turned hook to hook over any selected one of said securing portions.

5. A hose clamp of sheet metal having one end portion provided with an opening through which the other end portion passes, one end portion being cupped to receive the end of a screw, andI the other end portion being apertured for receiving` said screw and having screw-threaded means thereon to provide for tightening the clamp, the cupped end of said clamp being widened to provide for said Iopeningl and the narrow end of said clamp being apertured at a plurality of places tov provide adjustment of the clamp to different sizes of hose.

6. A hose clamp of sheet metal having one end portion provided with an opening through which the other end portion passes, one end portion being cupped to receive the end of a screw, and the other end portion being apertured for receiving said screw and having screw-threaded means thereon to provide for tightening the clamp, the cupped end of said clamp being widened to provide for said opening, one side edge of said widened portion being aligned with the remainder of the clamp so that the widened portion is all at one side, the widened portion being substantially double the width of the other portion.

'7. A hose clamp made from a strip of sheet metal, said clamp having an end portion the width of the strip and the remainder thereof half the width of the strip, the wide end portion being cupped to receive the end of a screw and the clamp being straight along one edge from the cupped portion to the other end, whereby waste of material from the strip is practically eliminated and the cutting operations for making two clamps are reduced to a minimum.

8. A hose clamp of sheet metal having one end portion provided with an opening through which the other end portion passes, one end portion being cupped to receive the end oi a screw, and ,they other end portion being apertured for receiv- Iing said screw and having screw-threaded means thereon to provide for tightening the clamp, said screw-threaded means comprising a nut rounded on the face engaged by the clamp said nut engaging both end portions of the clamp where they cross each other thereby pressing them against the hose at their cross-over line.

, HELGE A. BORRESEN. 

